Joined: 19 May 2010
Posts: 3973
Location: ipswich QLD
Nice one dude - got a link for those wheel gears ?- they should have some mega power with those huge brushless _________________ Miles Blow - Julie Pitts
www.mulesfilm.com.au www.wombokforest.com.au
-Pickasso- Vivid Sportsman champion 2015
Fri Aug 02, 2019 8:56 am
Knightrous Site Admin
Joined: 15 Jun 2004
Posts: 8511
Location: NSW
quote:Originally posted by miles&Jules:
Nice one dude - got a link for those wheel gears ?
I found that RS Components has a good selection of gears these days for acceptable prices. These are Module 1.5 in a 12:40 ratio.
While everyone was having the pleasure of competing at RoboWars Brisbane, I had to settle for a long weekend in the garage.
Have to start some where I guess.
Moked up a hub+pulley for the weapon.
Using some offcuts to position things to roughly where they will go.
Shaped some MDF for a rough template to transfer into Hardox 500
Hardox 500 parts with a temporary noodle shaft (Till I can drill a 30mm hole in the Hardox ) _________________ https://www.halfdonethings.com/
Tue Aug 20, 2019 10:46 am
Knightrous Site Admin
Joined: 15 Jun 2004
Posts: 8511
Location: NSW
Sent the Hardox 500 uprights off to Glen to have 30mm holes bored into them for the weapon shaft bushes to fit Then tack welded the assembly back onto the chassis for alignment.
Started making an MDF template for the side armour/brace. It's an awkward shape.
First one cut from yet more Hardox 500. A few errors in the temeplate will require a bit of gap filling with the welder, but that happens
Closer but the gaps are pretty noticeable from here...
Both sides cut out, aligned into place and tack welded.
Had to get brutal with the grinder again. Removed all the weapon assembly and cut all the sections of the lower chassis that are not required.
Welded in the sections that are remaining.
Hoping to start welding in the uprights permanently tonight, the progress onto finalising some parts of the weapon like motor position and belt lengths. _________________ https://www.halfdonethings.com/
Tue Aug 27, 2019 10:42 am
Knightrous Site Admin
Joined: 15 Jun 2004
Posts: 8511
Location: NSW
Completed a lot of welding and made some things very permanent.
Uprights multi tack welded into place and positioned.
Side supports and armour welded to the chassis and uprights
Fully welded uprights around the shaft and side supports.
Batteries arrived, this will give Knightrous a 12S 2.2Ah capacity.
This decision was something I had been holding off, on doing for a while, but it became inevitable with the requirements for this robot. The drive and wheels must go close to the weapon axis and it needs more space to fit them. So the original chassis and wheel guards had to be removed....
This left it looking very bare, but it did make space!
I'm still undecided on which drive configuration I'm going to decide on.
The spur gears are a very simple setup, uses off the shelf parts and will be easy to repair and service
The planetary gearboxes are more expensive, require some modifications but have a nice and simple form factor that suits the robot.
The new wheel guards tack welded in. More bracing and reinforcement to come! _________________ https://www.halfdonethings.com/
Wed Sep 18, 2019 11:29 am
maddox
Joined: 21 Dec 2006
Posts: 786
Location: Belgium
The spur gear setup would give you a top speed of 50kph on 12S. Or 25kph on 6S.
What gearratio does the planetary drive have?
Sat Sep 21, 2019 3:35 pm
Knightrous Site Admin
Joined: 15 Jun 2004
Posts: 8511
Location: NSW
quote:Originally posted by maddox:
The spur gear setup would give you a top speed of 50kph on 12S. Or 25kph on 6S.
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